%0 Journal Article %A N. V. Krylov %T The first boundary value problem for elliptic equations of second order %J Differencialʹnye uravneniâ %D 1967 %P 315-326 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1967_3_2_a13/ %G ru %F DE_1967_3_2_a13